Musical bell.



PATENTED JUNE 9, 1908.

J. G. DEAGAN. MUSICAL BELL. APPLICATION PIT-JED MAR. 31, 1906.

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. JOHN c. DEAGAN, or CHICAGO, ILLINOIS. I

MUSIGAL BELL.

Specification of Letters Patent.

Patented June 9, 1908.

Application filed March 81, 1906. Serial No. 309,161.

To all whom it may concern:

Be it known that 1, JOHN C. DEAGAN, a citizen of the United States, residin at Chica 0, in the county of Cook and tate of Illinois, have invented a certain new and useful Improvement in Musical Bells, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, formlng a part of this specificatlon. 3 p

M invention relates to musical bells and p rticularly to that class of musical bells t lat are usually sounded by means of hammer blows.

One embodiment of the invention is of particular service as a gong or strike forclocks, organs or pianos, though the use to which the invention is put is not to be thus I will explain my invention by reference to the accompanying drawing showing the preferred embodiment thereof, in which- Figure 1 is a front view of a com lete device constructed in accordance. Wit the invention. Fig 2 is a sectional view on line 2 of Fig. 1. i 3 is a sectional view on line' 3 of Flg. 2. 4 1s a front view of the central portion 0 the tube with thesounding bars removed and showing the throat openings. Fi' 5 is a bottom sectional view on line 5 of Fig. 1. Fig. 6 is a front view showing a detail of the upper portion of the sounding bar or plate. Fig. 7 shows the method of attaching the. sound dampers to the, hammer stem. Fig. 8 is a sectional view online 8 of Fig.6.

Likeparts are indicated by similar characters of reference throughout the different fi ures. 1

The soundin column or columns are desirablyafforde by means of a tubular structure or resonator .QV-that may have-plugs 10 dis osed somewhat near the ends thereof for de ning the characteristic 'bf the air columns, though I do not "wish to be limited to the plugs 10, nor to their location. Where there is a pluralityfof sounding plates, I desirably apportion a part of .the interior of the tube to each sounding plate. Wherethere are, as in the embodiment of theinvention shown, two soundin plates 11, 12,-a portion ap roximating a haf of the interior of the tu e (that is a portionapproximating half of the space between the plugs 10) is associatedwith a sounding plate. In the embodimentof the invention shown, the sound- A zig-zag diaphragm 13 is. located at the opening in the tube, the horizontal stretches 13 of said diaphra In 006 crating with the intervening vertica stretch thereof to comletely separate the tube into distinct overapping air columns, one corresponding to the plate 11 and the other to the plate 12. The general direction of the zig-zag diaphragm is transverse to the len th of the tube in which it is contained. bus, the chamber portion associated with the sounding plate 11 is shaped as most clearlyshown m Fig. 3, said figure also showing the shape of the chamber portion associated with the sounding late 12, these two chamber portions over apping as indicated in said figure. The throats 14, 15 afforded b said diaphragm lie abreast, the vertically 'sposed portion of the'dia hra m intervening sufficiently between tlie plates 11, 12 sufficiently to revent the sound roduced from one p ate from lninglin wit the sound apparatus by the other. 'e-j-dia hragm 13 extends di-ametrically across" t e tube, so that the throats 14, 15 have considerable depth.

The intermediate portion of the tube 9 is recessed as indicated most clearly in Fig. 3, so as to accommodate the lates 11, 12and to permit of a mounting or said plates, said mounting being desirably afforded by means of pins lfieoated with suitable sound-insulating material, which pins pro'ect through apertures in the upper ends of t e plates 11, 12, the a erture in each plate being afforded with a siioulder or inwardly extending-pe ripheral projection 17 that affords a limited area of en agement between the plate andits support, or the purpose hitherto outlined. The lower ends of the plates are free to swing for the purpose hitherto specified, but, in or- .der that the. lates may not be dismounted and may not e permitted excessive swinging orvibratory movement, I provide felt or.-

sound-dampening guards 18, 19, 20, 21, 10' cated as shown, the guards 19, 20 being sep- .arated a sufiicient distance'to permit of the desired swing ng .movement.

ing plates to be sounded simultaneously, the knockers 22 are desirably provided wlth a single stem 23 carrying a cross-head 24 upon whlch the knockers 22 are mounted. The stem 23 and the cross-head 24 are desirably formed of wood.

It will be seen from the above that I have provided a musical bell comprising a resonating tube provided with a zig-zag diaphragm in its interior that is extended across the tube between points of the tube displaced longitudinally of the tube, whereby said tube is divided into chambers that extend longitudinally of the tube past each other, said tube having an opening into each chamber, and a soundmg plate located before each opening, said openings being located where the chambers of the tube overlap. If the tube 9 is to be suspended, provide the same with a support 9' that carries a lining of sound-dampening material 9 whereby the tube 9 may be supported without permitting the vibrations to be imparted materially to the structure.

The knockers are desirably located to strike the thinnest and most concaved portions of thesounding plates. The stem 23 is pivoted at the upper end of the tube and depends as indicated in Fig. 2. The knockers may be actuated in any suitable way; I have indicated a string 25, adapted to a clock movement. This string may be pulled in opposition to a coil spring 26 and then suificlently released to permit the knockers 22 to impinge upon the plates 11, 12, by reason of the retractile force of the. spring 26. The check s ring 27 provided with a contacting block 0 sound-dampening material 27 automatically serves to remove the knockers 22 from engagement with the plates 11, 12 just after said knockers have struck said plates, to, permit suitable vibration of said plates. When the knockers are restored to the normal positions indicated in Fig. 2, the sound dampers 29 are brou ht into contact with the upper edges of the p ates to stop their vibration. It should. be stated that in the normal position spring 26 is expanded. In the form v of the Invention shown, there are two such sound-dampers, desirably constructed of wire surrounded with stockmets of rubber or othgr suitablesound-insulating material.

ile in the embodiment of the invention shown, the knockers 22 are given a normal position out of en agement with the plates 11, 12, I do not wis to be limited to the recise relative normal positions of the knoc ers 22 with respect to the plates. It will he noted that the hollows in the sounding late preferably face outwardly so that the iiammers directly strike the surfaces thereof.-

I claim as new and desire to secure by Letters-Patent the following: A

1. A musical bell that includes in its formation a resonating tube provided with a diaphragm in its interior that is extended across and transverse to the length of the tube between points of the tube displaced longitudinally of the tube, said tube being thereby divided into chambers that extend longitudinally of the tube past each other.

2. A musical bell that includes in its formation a resonating tube provided with a zig-zag diaphragm in its interior that is extended across and transverse to the length of the tube between points of the tube displaced longitudinally of the tube, said tube being thereby divided into chambers that extend longitudinally of the tube past each other.

3. A musical bell that includes in its formation a resonating tube provided with a diaphragm in its interior that is extended across and transverse to the length of the tube between points of the tube displaced longitudinally of the tube, said tube being thereby divided into chambers that extend longitudinally of the tube past each other, said tube being open, and. a sounding plate located before the open portion of the tube.

4. A musical hell that includes in its formation a resonating tube having a zig-zag diaphragm that separates its interior into two overla )ping spaces, and sounding plates located beiore said tube, which tube is rovided with openings where said soun ing plates are disposed.

5. A musical bell that includes in its formation a resonating tube provided with a zig-zag diaphragm in its interior that is extended across and transverse to the length of the tube between points of the tube displaced 100 longitudinally of the tube, said tube being thereby divided into chambers that extend longitudinally-of the tube past each other, said tube belng open, and a sounding plate located before the open portion of thetube. 105

6. A musical bell that includes in its formation a resonating tube having a zig-zag diaphragm that separates its interior into two overla ping'spaces, said tube having openings W ere the said s )aces thereof over- 11'.) lap, and sounding plates located before said openings.

7. A musical hell that includes in its formation a resonating tube rovided with a diaphragm in its interior t at is extended 11 across and transverse to the length of the tube between points of the tube displaced longitudinally of the tube, whereby said tube is divided into chambers that extend longitudinally of the tube past each other, said 1 tube having an opening into each chamber, and a sounding plate located before each openmg.

8. A musical bell that includes in its formatio'n a resonating tube having a zig-zag diaphragm that separates its interior into two overlapping spaces, said tube being opened where said spaces overlap, to constitute throats oi restricted size as compared with the balance of the spaces.

9. A musical hell that includes in its formation a resonating tube provided with a zig-za diaphragm in its interior that is extende across and transverse to the length of the tube between points of the tube displaced longitudinally of the tube, whereby said tube is divided into chambers that extend longitudinally of the tube past each other, said tube having an opening into each chamber, and a sounding plate located before each opening.

' vertically disposed sounding versely.

12. A musical bell that includes in its formation a resonating tube provided with a diaphragm in its interior t at is extended across and transversely to the length of the tubebetwean points of the tube displaced eingdprovlded I lon itudinally of the tube, whereby s'aid tube is ivided into chambers that extend longitudinally of the tube past each other, said tube having an opening into each chamber, and a sounding platelocated before each 0 ening, said openings being located where t e chambers o thetube overlap.

13. A musical bell that includes in its formation a resonating tube provided with a zig-zag diaphragm in its interior that is extended across and transverse to the len th of the tube between oints of the tube disp aced lon itudinally of t e tube, whereby said tube is ivided int-o chambers that extend longi- 40 tudinally of the tube past each other, said tube having an opening into each chamber, and a sounding plate located before each 0 ening, 'said o enings being located where t e chambers 0? In witness whereof I hereunto subscribe my name this 19th day of March A. D., 19l)6.

JOHEN C. DEAGAN.

-Witnesses:

LEON S'raon, L. D. KELLOGG.

the tube overlap. 

